Giant hydroplane



Patented Jena 9, I923.

CLAUDIUS DORNIEE, F FRIEDRICHSHAFEIV, GERMANY, ASSIGN'OR, BY MESNE ASSIGNMENTS, TO HIMSELF AND TO DOBNIER METALLBAUTEN-GESELLSCHAFT MIT BESCHRANKTIER HAFTU'NG.

, ram n rnnornann.

To all whom it may concemt:

Be it knownthat I, CLAUDIUS DoRNInR, a

citizen of Germany, residing at Friedrich.

shafen, Germany, have invented certain new aand useful Improvements in Giant Hydroposts F, the main supporting plane A is ex- 60 planes, of which the following is a specification.

My invention refers toflying-machines ,and more especially to giant hydroplanes having the motor plant accommodated, in

the supporting planes. l

According to the present invention the supporting planes 'asflwell as the motor plant arranged therein are'sup orted by a few 1 strong struts ri idly fixe at the bases to the hull of the oat and with their upper ends to the supporting planes and the engine cases respectively. These struts being hollow and of large cross-section enable a 2 direct communication for the crew. between the hull of the boat and the motor plant, the passage from the upper part of the flying-boat to the lower part thus becoming perfectly free from danger; Moreover the rope-ladders and other wire .bracings which increase the running resistance, are eliminated. The air resistance of the posts, moreover, is reduced either by making the tubes themselves stream lined or by providing the more or less circular tubes with stream lined envelopes. In order to further increase the useful space and to obtaln a simple, but effective staying of the main supporting plane outside as the motor plant, the hull of the boat in the part situated below'the motor foundation, a pair of self-supporting stub planes is fixed laterally to the hull. From the stub planes a number of auxiliary struts eitend approxi- .40. mately to the center of each half ofthe supporting plane. It is advisable to arrange the struts of each side behind one another in a plane extending from the front to the back in such a manner that the larger portion of each half of the supporting plane which is situated beyond the struts, remains self-supporting.

The drawing attached to this specification and forming part thereof, illustrates by way at of example aflying-boat embodying my fin-- ventionin a purely diagrammatical manner, Figs. 1, 2 and 3 being a side-view, a top view and a front view, respectively, of a giant The hull B is connected with the central part of the main supporting plane A by means of four hollow posts F each provided with a stream-lined casing.

In the parts situated above each pair of panded to form anengine casing a. Each engine casing contains two motors C for driving the air propellers E. The hollow posts F are provided with rungs in order to serve as shafts closed all round and thus to allow of persons passing through. The space intervening between the rear half of the 'post and the casing can contain piping, signalling traction ropes, telephone wires, etc. The part'of the hull of'the boat B situated under the main supporting plane A: and under the engine casings a respectively, carries two self supporting stub planes 6. Stays slanting upwards lead from the outer edge of the stub planes b to the main supporting plane Ain a plane extending from the front to the back. The dimensions ,arechosen in such a manner that about onehalf to two-thirds of the main supporting planeon each side is self-supporting. The two engine casings a are laid as near the plane of symmetry as possible so that the circles, described by the forward pair 0 propellers, almost coincide. I

I claim;

1. In afiyingmachine in combination, a hull, a supporting plane above said hull, amotor plant disposed within said supporting plane and a hollow supporting strut of large \cross section extending from said hull to the portion of said plane accommodating said motor plant. I

2. In a flying machine in combination, a i hull, a supporting plane above said hull, a pair of motor plants symmetrically disposed within said supporting plane and apalr of hollow supporting struts of large cross-section extending and forming passageways from said hull to each motor plant.

3. In a flying machine in combination, a .hull, a supporting plane above said hull, a motor plant disposed within said supporting plane and a hollow streamlined supporting' strut of large cross section extending from said hull to the'portion of said plane accommodating said motor plant. a I t. In a dying machine in combination, a hull, a suppeiting plane above said hull, a

10 i cross section extending from said hull to pair of motor plants symmetrically disposed within said supporting plane and a pair of hollow streamlined supporting struts of large cross section extending and forming passageways from said hull to each motor plant.-

5. In a flying machine in combination, a hull, a supporting plane above said hull, a motor plant disposed within said supporting plane, a hollow supporting strut of large the portion of said lane accommodating said motor plant, a pair of stub planes fixed to the hull and auxiliary struts extending from said stub planes to said supporting plane. 1 p a 6. In a flying machine in combination, a hull, a supporting plane above said hull, a pair of motor plants symmetricallydisposed within said supporting plane, a pair of hollow supporting struts of large cross section extending and forming passageways from said hull to each motor plant, a pair of stub planes fixed to the hull and auxiliary struts extending from said stub planes to said supportin plane.

In testimony whereof I affix my signature.

. omens DORNIER. 

